One scene I found really hilarious in IM3 is when his first PTSD episode occurred, prompting him to leave his conversation with Rhodey and hide in his bulky, combat ready, heavily weaponized MKVII suit in a civilian area. Just the visual of it gave me a chuckle. One would think he would don a less powerful suit for casual roams.

Then again, Tony does seem like the kind of guy who would bring a powerful armored suit just to grab a bite at Appleby's or something.